#!/sbin/node
 
var net = require(\'net\');
 
function proxyPort(srcport,destServer,destport)
{
  var server = net.createServer(function(c) { //\'connection\' listener
 
    c.on(\'end\', function() {
        console.log(\'src disconnected\');
    });
 
    var client = net.connect({port: destport,host:destServer},function() { //\'connect\' listener
         console.log(\'ok....\');
         c.on(\'data\', function(data) {
             console.log(data.length);
           client.write(data);
         });
    });
 
    client.on(\'error\', function(err) {
     console.log(\"dest=\" + err);
     c.destroy();
    });
 
    c.on(\'error\', function(err) {
     console.log(\"src\" + err);
     client.destroy();
    });
 
    client.on(\'data\', function(data) {
     c.write(data);
    });
 
    client.on(\'end\', function() {
     console.log(\'dest disconnected \');
    });
 
  });
  server.listen(srcport, function() { //\'listening\' listener
   console.log(\'server bound\' + srcport);
  });
}
 
var params = process.argv;
if(params.length != 5){
 console.log(\"node port.js srcport destserver destport \"); 
 return;
}
 
proxyPort(params[2],params[3],params[4]);
 
console.log(process.argv);